Complete the fixing when screwed onto bolts, screws and threaded rods.

A2 stainless steel screw class 70 Unifix
Key features
- DriveEI3, EI4, EI5, EI6
- L thread7,9, 17,9, 20, 7,6, 17,6, 22, 13, 17, 24, 16, 21, 26, 28
- Screw diameter mm x lengthM4x10, M4x20, M4x30, M5x10, M5x20, M5x30, M5x40, M6x16, M6x20, M6x30, M6x40, M6x50, M6x60, M8x20, M…
- Head diameter7, 8,5, 10, 13
What it is
The Unifix TCCEI Class 70 A2 stainless steel metric screw by Unifix (code 0094-4-10-01) is a reliable solution for precise fixings in demanding environments. Designed to withstand corrosion and stress, it is aimed at professionals in building, mechanical engineering and maintenance who require durable, high-performance components.
Metric fasteners include metric-thread screws and bolts, spacers and small parts such as split pins, for joining parts with a nut or into a tapped hole.
What it is for
Used for assembling steel structures, in steel fabrication, from cutting to assembly and for mechanical fixing of structures and components to walls, ceilings and floors.
How to use it
Choose diameter, length, property class and material, zinc-plated or stainless, according to the joint and the environment. Insert the screw into the clearance or tapped hole, add the washer and tighten the nut with a spanner of the correct size, without exceeding the specified torque. Insert split pins through the hole in the pin or bolt and bend them over to stop the nut from working loose.
Where it is used
- Mechanical engineering industry
- Mechanical workshops
Technical data
- Drive: EI3, EI4, EI5, EI6
- L thread: 7,9, 17,9, 20, 7,6, 17,6, 22, 13, 17, 24, 16, 21, 26, 28
- Head diameter: 7, 8,5, 10, 13
Who it is for
Designed for metal fabricators, industrial maintenance technicians and mechanics.
Related products
- A2 stainless steel screw AISI Unifix
- Metric TCB screw with nut Unifix
- Hexagonal coupling nut white zinc-plated Unifix — from the category Hex Nuts
- Spring washer (Grover) Unifix — from the category Flat Washers
- Set of satin chrome combination spanners Fervi 0073 — from the category Combination Spanners
- Browse the whole category: Bolts and Metric Screws
Before you order
In your request, please state the diameter, the thread and the quantities required, so we can give you the right quotation first time.
For prices and availability, request a quote from AMES Srl: we will reply with our quotation, delivery times and, where needed, an equivalent technical alternative.
Specifications 4
| Drive | EI3, EI4, EI5, EI6 |
|---|---|
| L thread | 7,9, 17,9, 20, 7,6, 17,6, 22, 13, 17, 24, 16, 21, 26, 28 |
| Screw diameter mm x length | M4x10, M4x20, M4x30, M5x10, M5x20, M5x30, M5x40, M6x16, M6x20, M6x30, M6x40, M6x50, M6x60, M8x20, M… |
| Head diameter | 7, 8,5, 10, 13 |
The perfect setup for this job
Everything you need in one place, from functionality to safety.
For the job
Spread the load under nuts and screws and stop the fixing coming loose.
Tighten and loosen nuts and bolts with the open end or the polygonal ring end.
Drive and remove screws with a hex or Torx recess, even in tight spaces.




